The Japanese Beetle grubb has been the biggest problem for the past several years in mid-Michigan. In the spring the grubbs wake up and begin eating your grass, turning it brown.
With a trip to your local lawn care store you will find several ways to rid your lawn of the pesky grubb. You can use chemicals to kill the pest.
Or there are a couple of organic methods that take longer and probably cost more.
The use of chemical pesticides is fastest but you will need to use them twice a year, both spring and fall.
Before you start, get some advice from an expert or do research on your own. For the perfect yard with green grass, expect to spend time, effort and money.